@misc{indiciae61354ba3d601,
  title = {Gases and trace elements in soils at the North Silver Bell deposit, Pima County, Arizona},
  author = {M. E. Hinkle and C.A. Dilbert},
  year = {1984},
  doi = {10.1016/0375-6742(84)90074-8},
  url = {https://pubs.usgs.gov/publication/70013150},
  note = {Source identifier: 70013150}
}